<h1>Biometric Aadhaar Authentication Now Required for GST Registration in Assam Under Amended CGST Rules</h1> Effective April 1, 2025, Assam has implemented biometric-based Aadhaar authentication for GST registration applicants under amended CGST Rules. Applicants will receive either an OTP-based authentication link or an appointment booking link for visiting a GST Suvidha Kendra (GSK). Those directed to GSK must book an appointment, bring their appointment confirmation, jurisdiction details, original Aadhaar and PAN cards, and original uploaded documents. Biometric verification must be completed within the timeframe specified in the email. ARN generation will occur after successful biometric authentication and document verification.